Home / 31,158,154.71-42,996,929.07-17,220,031.92

Finding the Fourth Proportional to 31,158,154.71, 42,996,929.07 and 17,220,031.92

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Solution

The fourth proportional to 31,158,154.71, 42,996,929.07 and 17,220,031.92 is: 23,762,912.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158,154.71 : 42,996,929.07 = 17,220,031.92 : x
  2. Step 2: Convert to fraction form
    31,158,154.71/42,996,929.07 = 17,220,031.92/x
  3. Step 3: Cross multiply
    31,158,154.71x = 42,996,929.07 × 17,220,031.92
  4. Step 4: Simplify right side
    31,158,154.71x = 740,408,491,047,376
  5. Step 5: Solve for x
    x = 740,408,491,047,376/31,158,154.71
  6. Step 6: Final answer
    x = 23,762,912.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.